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for (int i = n / 2 - 1; i = 0; i--) {
，这一点在WPS下载最新地址中也有详细论述
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Intel's 1986 ICCD paper Performance Optimizations of the 80386 reveals how tightly this was optimized. The entire address translation pipeline -- effective address calculation, segment relocation, and TLB lookup -- completes in 1.5 clock cycles: